Oral Sensation and Perception in Apraxia of Speech and Aphasia

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Abstract
Thirty patients with apraxia of speech, 10 patients with aphasia and no apraxia of speech, and 30 normal subjects were tested by three oral sensory-perceptual measurements: oral form identification, two-point discrimination, and mandibular kinesthesia. The apraxia-of-speech group was significantly inferior to the aphasic and normal groups on all three oral sensory-perceptual tests. The normal and aphasic groups did not differ significantly from each other. Apraxia of speech and oral sensory-perceptual deficit were related in that the more severe the apraxia of speech, the more profound the oral sensory-perceptual deficit. Not all patients with apraxia of speech demonstrated impaired oral sensation and perception; however, higher cortical sensory dysfunction frequently accompanied apraxia of speech.

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